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        Package&nbsp;pypln ::
        <a href="pypln.apps-module.html">Package&nbsp;apps</a> ::
        Module&nbsp;frequency_counter
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<h1 class="epydoc">Source Code for <a href="pypln.apps.frequency_counter-module.html">Module pypln.apps.frequency_counter</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno"> 1</tt>  <tt class="py-line"><tt class="py-comment">#-*- coding:utf-8 -*-</tt> </tt>
<a name="L2"></a><tt class="py-lineno"> 2</tt>  <tt class="py-line"><tt class="py-docstring">"""</tt> </tt>
<a name="L3"></a><tt class="py-lineno"> 3</tt>  <tt class="py-line"><tt class="py-docstring">This script</tt> </tt>
<a name="L4"></a><tt class="py-lineno"> 4</tt>  <tt class="py-line"><tt class="py-docstring">Created on 28/09/11</tt> </tt>
<a name="L5"></a><tt class="py-lineno"> 5</tt>  <tt class="py-line"><tt class="py-docstring">by flavio</tt> </tt>
<a name="L6"></a><tt class="py-lineno"> 6</tt>  <tt class="py-line"><tt class="py-docstring">"""</tt> </tt>
<a name="L7"></a><tt class="py-lineno"> 7</tt>  <tt class="py-line"><tt class="py-name">__author__</tt> <tt class="py-op">=</tt> <tt class="py-string">'flavio'</tt> </tt>
<a name="L8"></a><tt class="py-lineno"> 8</tt>  <tt class="py-line"> </tt>
<a name="L9"></a><tt class="py-lineno"> 9</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">nltk</tt> <tt class="py-keyword">import</tt> <tt class="py-name">ConditionalFreqDist</tt><tt class="py-op">,</tt> <tt class="py-name">FreqDist</tt><tt class="py-op">,</tt> <tt class="py-name">word_tokenize</tt> </tt>
<a name="L10"></a><tt class="py-lineno">10</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">nltk</tt><tt class="py-op">.</tt><tt class="py-name">data</tt> <tt class="py-keyword">import</tt> <tt class="py-name">LazyLoader</tt> </tt>
<a name="L11"></a><tt class="py-lineno">11</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">pymongo</tt> <tt class="py-keyword">import</tt> <tt class="py-name">Connection</tt> </tt>
<a name="L12"></a><tt class="py-lineno">12</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">pymongo</tt><tt class="py-op">.</tt><tt class="py-name">errors</tt> <tt class="py-keyword">import</tt> <tt class="py-name">OperationFailure</tt> </tt>
<a name="L13"></a><tt class="py-lineno">13</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">cPickle</tt> </tt>
<a name="L14"></a><tt class="py-lineno">14</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">argparse</tt> </tt>
<a name="L15"></a><tt class="py-lineno">15</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">collections</tt> <tt class="py-keyword">import</tt> <tt class="py-name">OrderedDict</tt> </tt>
<a name="L16"></a><tt class="py-lineno">16</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">bson</tt> <tt class="py-keyword">import</tt> <tt class="py-name">BSON</tt> </tt>
<a name="L17"></a><tt class="py-lineno">17</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">bson</tt><tt class="py-op">.</tt><tt class="py-name">son</tt> <tt class="py-keyword">import</tt> <tt class="py-name">SON</tt> </tt>
<a name="L18"></a><tt class="py-lineno">18</tt>  <tt class="py-line"> </tt>
<a name="L19"></a><tt class="py-lineno">19</tt>  <tt class="py-line"><tt class="py-comment">#tokenizer = {'en':LazyLoader('tokenizers/punkt/english.pickle'),</tt> </tt>
<a name="L20"></a><tt class="py-lineno">20</tt>  <tt class="py-line"><tt class="py-comment">#             'pt':LazyLoader('tokenizers/punkt/portuguese.pickle')}</tt> </tt>
<a name="L21"></a><tt class="py-lineno">21</tt>  <tt class="py-line"> </tt>
<a name="L22"></a><tt class="py-lineno">22</tt>  <tt class="py-line"><tt class="py-comment">#TODO: implement the possibility to run as a single process or to call workers to do the work in parallel</tt> </tt>
<a name="L23"></a><tt class="py-lineno">23</tt>  <tt class="py-line"> </tt>
<a name="frequency"></a><div id="frequency-def"><a name="L24"></a><tt class="py-lineno">24</tt> <a class="py-toggle" href="#" id="frequency-toggle" onclick="return toggle('frequency');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="pypln.apps.frequency_counter-module.html#frequency">frequency</a><tt class="py-op">(</tt><tt class="py-param">host</tt><tt class="py-op">=</tt><tt class="py-string">'127.0.0.1'</tt><tt class="py-op">,</tt><tt class="py-param">port</tt><tt class="py-op">=</tt><tt class="py-number">27017</tt><tt class="py-op">,</tt><tt class="py-param">db</tt><tt class="py-op">=</tt><tt class="py-string">'test'</tt><tt class="py-op">,</tt><tt class="py-param">collection</tt><tt class="py-op">=</tt><tt class="py-string">'Docs'</tt><tt class="py-op">,</tt><tt class="py-param">fields</tt><tt class="py-op">=</tt><tt class="py-op">[</tt><tt class="py-string">'text'</tt><tt class="py-op">]</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="frequency-collapsed" style="display:none;" pad="++" indent="++++"></div><div id="frequency-expanded"><a name="L25"></a><tt class="py-lineno">25</tt>  <tt class="py-line">    <tt class="py-docstring">"""</tt> </tt>
<a name="L26"></a><tt class="py-lineno">26</tt>  <tt class="py-line"><tt class="py-docstring">    Calculate frequency distribution (dictionary) of words of each document of the collection and store it</tt> </tt>
<a name="L27"></a><tt class="py-lineno">27</tt>  <tt class="py-line"><tt class="py-docstring">    as a list of items.</tt> </tt>
<a name="L28"></a><tt class="py-lineno">28</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L29"></a><tt class="py-lineno">29</tt>  <tt class="py-line"><tt class="py-docstring">    """</tt> </tt>
<a name="L30"></a><tt class="py-lineno">30</tt>  <tt class="py-line">    <tt id="link-0" class="py-name" targets="Variable pypln.pypln.stores.mongostore.conn=pypln.pypln.stores.mongostore-module.html#conn"><a title="pypln.pypln.stores.mongostore.conn" class="py-name" href="#" onclick="return doclink('link-0', 'conn', 'link-0');">conn</a></tt> <tt class="py-op">=</tt> <tt class="py-name">Connection</tt><tt class="py-op">(</tt><tt class="py-name">host</tt><tt class="py-op">=</tt><tt class="py-name">host</tt><tt class="py-op">,</tt><tt class="py-name">port</tt><tt class="py-op">=</tt><tt class="py-name">port</tt><tt class="py-op">)</tt> </tt>
<a name="L31"></a><tt class="py-lineno">31</tt>  <tt class="py-line">    <tt class="py-name">coll</tt> <tt class="py-op">=</tt> <tt id="link-1" class="py-name"><a title="pypln.pypln.stores.mongostore.conn" class="py-name" href="#" onclick="return doclink('link-1', 'conn', 'link-0');">conn</a></tt><tt class="py-op">[</tt><tt class="py-name">db</tt><tt class="py-op">]</tt><tt class="py-op">[</tt><tt id="link-2" class="py-name" targets="Function pypln.pypln.stores.mongostore.collection()=pypln.pypln.stores.mongostore-module.html#collection"><a title="pypln.pypln.stores.mongostore.collection" class="py-name" href="#" onclick="return doclink('link-2', 'collection', 'link-2');">collection</a></tt><tt class="py-op">]</tt> </tt>
<a name="L32"></a><tt class="py-lineno">32</tt>  <tt class="py-line">    <tt class="py-name">i</tt> <tt class="py-op">=</tt> <tt class="py-number">1</tt> </tt>
<a name="L33"></a><tt class="py-lineno">33</tt>  <tt class="py-line">    <tt class="py-name">cursor</tt> <tt class="py-op">=</tt> <tt class="py-name">coll</tt><tt class="py-op">.</tt><tt class="py-name">find</tt><tt class="py-op">(</tt><tt class="py-op">{</tt><tt class="py-string">"freqdist"</tt><tt class="py-op">:</tt><tt class="py-name">None</tt><tt class="py-op">}</tt><tt class="py-op">,</tt><tt class="py-name">fields</tt><tt class="py-op">=</tt><tt class="py-name">fields</tt><tt class="py-op">+</tt><tt class="py-op">[</tt><tt class="py-string">'lang'</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L34"></a><tt class="py-lineno">34</tt>  <tt class="py-line">    <tt class="py-name">rd</tt> <tt class="py-op">=</tt> <tt class="py-name">cursor</tt><tt class="py-op">.</tt><tt class="py-name">count</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L35"></a><tt class="py-lineno">35</tt>  <tt class="py-line">    <tt class="py-keyword">print</tt> <tt class="py-string">"%s  documents need analysis"</tt><tt class="py-op">%</tt><tt class="py-name">rd</tt> </tt>
<a name="L36"></a><tt class="py-lineno">36</tt>  <tt class="py-line">    <tt class="py-keyword">for</tt> <tt class="py-name">t</tt> <tt class="py-keyword">in</tt> <tt class="py-name">cursor</tt><tt class="py-op">:</tt> </tt>
<a name="L37"></a><tt class="py-lineno">37</tt>  <tt class="py-line">        <tt class="py-keyword">print</tt> <tt class="py-string">"updating %s of %s"</tt><tt class="py-op">%</tt><tt class="py-op">(</tt><tt class="py-name">i</tt><tt class="py-op">,</tt><tt class="py-name">rd</tt><tt class="py-op">)</tt> </tt>
<a name="L38"></a><tt class="py-lineno">38</tt>  <tt class="py-line">        <tt class="py-name">lang</tt> <tt class="py-op">=</tt> <tt class="py-string">'en'</tt> <tt class="py-keyword">if</tt> <tt class="py-string">'lang'</tt> <tt class="py-keyword">not</tt> <tt class="py-keyword">in</tt> <tt class="py-name">t</tt> <tt class="py-keyword">else</tt> <tt class="py-name">t</tt><tt class="py-op">[</tt><tt class="py-string">'lang'</tt><tt class="py-op">]</tt> </tt>
<a name="L39"></a><tt class="py-lineno">39</tt>  <tt class="py-line">        <tt class="py-name">fd</tt> <tt class="py-op">=</tt> <tt class="py-name">FreqDist</tt><tt class="py-op">(</tt><tt class="py-name">word_tokenize</tt><tt class="py-op">(</tt><tt class="py-name">t</tt><tt class="py-op">[</tt><tt class="py-string">'text'</tt><tt class="py-op">]</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-comment">#.encode('utf8')))</tt> </tt>
<a name="L40"></a><tt class="py-lineno">40</tt>  <tt class="py-line">        <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L41"></a><tt class="py-lineno">41</tt>  <tt class="py-line">            <tt class="py-name">di</tt> <tt class="py-op">=</tt> <tt class="py-name">OrderedDict</tt><tt class="py-op">(</tt><tt class="py-name">fd</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">items</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L42"></a><tt class="py-lineno">42</tt>  <tt class="py-line">            <tt class="py-name">coll</tt><tt class="py-op">.</tt><tt class="py-name">update</tt><tt class="py-op">(</tt><tt class="py-op">{</tt><tt class="py-string">'_id'</tt><tt class="py-op">:</tt><tt class="py-name">t</tt><tt class="py-op">[</tt><tt class="py-string">'_id'</tt><tt class="py-op">]</tt><tt class="py-op">}</tt><tt class="py-op">,</tt><tt class="py-op">{</tt><tt class="py-string">'$set'</tt><tt class="py-op">:</tt><tt class="py-op">{</tt><tt class="py-string">"freqdist"</tt><tt class="py-op">:</tt><tt class="py-name">di</tt><tt class="py-op">}</tt><tt class="py-op">}</tt><tt class="py-op">)</tt><tt class="py-comment">#cPickle.dumps(fd)</tt> </tt>
<a name="L43"></a><tt class="py-lineno">43</tt>  <tt class="py-line">        <tt class="py-keyword">except</tt> <tt class="py-name">OperationFailure</tt><tt class="py-op">:</tt> </tt>
<a name="L44"></a><tt class="py-lineno">44</tt>  <tt class="py-line">            <tt class="py-keyword">print</tt> <tt class="py-string">"failed updating document: %s"</tt><tt class="py-op">%</tt><tt class="py-name">t</tt><tt class="py-op">[</tt><tt class="py-string">'_id'</tt><tt class="py-op">]</tt> </tt>
<a name="L45"></a><tt class="py-lineno">45</tt>  <tt class="py-line">        <tt class="py-name">i</tt> <tt class="py-op">+=</tt><tt class="py-number">1</tt> </tt>
</div><a name="L46"></a><tt class="py-lineno">46</tt>  <tt class="py-line"> </tt>
<a name="conditional_frequency"></a><div id="conditional_frequency-def"><a name="L47"></a><tt class="py-lineno">47</tt> <a class="py-toggle" href="#" id="conditional_frequency-toggle" onclick="return toggle('conditional_frequency');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="pypln.apps.frequency_counter-module.html#conditional_frequency">conditional_frequency</a><tt class="py-op">(</tt><tt class="py-param">text</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="conditional_frequency-collapsed" style="display:none;" pad="++" indent="++++"></div><div id="conditional_frequency-expanded"><a name="L48"></a><tt class="py-lineno">48</tt>  <tt class="py-line">    <tt class="py-keyword">pass</tt> </tt>
</div><a name="L49"></a><tt class="py-lineno">49</tt>  <tt class="py-line"> </tt>
<a name="L50"></a><tt class="py-lineno">50</tt>  <tt class="py-line"><tt class="py-keyword">if</tt> <tt class="py-name">__name__</tt><tt class="py-op">==</tt><tt class="py-string">"__main__"</tt><tt class="py-op">:</tt> </tt>
<a name="L51"></a><tt class="py-lineno">51</tt>  <tt class="py-line">    <tt id="link-3" class="py-name" targets="Module pypln.apps.parser=pypln.apps.parser-module.html"><a title="pypln.apps.parser" class="py-name" href="#" onclick="return doclink('link-3', 'parser', 'link-3');">parser</a></tt> <tt class="py-op">=</tt> <tt class="py-name">argparse</tt><tt class="py-op">.</tt><tt class="py-name">ArgumentParser</tt><tt class="py-op">(</tt><tt class="py-name">description</tt><tt class="py-op">=</tt><tt class="py-string">'Perform word frequency analysis on a database collection'</tt><tt class="py-op">)</tt> </tt>
<a name="L52"></a><tt class="py-lineno">52</tt>  <tt class="py-line">    <tt id="link-4" class="py-name"><a title="pypln.apps.parser" class="py-name" href="#" onclick="return doclink('link-4', 'parser', 'link-3');">parser</a></tt><tt class="py-op">.</tt><tt class="py-name">add_argument</tt><tt class="py-op">(</tt><tt class="py-string">'--db'</tt><tt class="py-op">,</tt> <tt class="py-string">'-d'</tt><tt class="py-op">,</tt> <tt class="py-name">help</tt><tt class="py-op">=</tt><tt class="py-string">"Database"</tt><tt class="py-op">)</tt> </tt>
<a name="L53"></a><tt class="py-lineno">53</tt>  <tt class="py-line">    <tt id="link-5" class="py-name"><a title="pypln.apps.parser" class="py-name" href="#" onclick="return doclink('link-5', 'parser', 'link-3');">parser</a></tt><tt class="py-op">.</tt><tt class="py-name">add_argument</tt><tt class="py-op">(</tt><tt class="py-string">'--col'</tt><tt class="py-op">,</tt> <tt class="py-string">'-c'</tt><tt class="py-op">,</tt> <tt class="py-name">help</tt><tt class="py-op">=</tt><tt class="py-string">"Collection"</tt><tt class="py-op">)</tt> </tt>
<a name="L54"></a><tt class="py-lineno">54</tt>  <tt class="py-line">    <tt id="link-6" class="py-name"><a title="pypln.apps.parser" class="py-name" href="#" onclick="return doclink('link-6', 'parser', 'link-3');">parser</a></tt><tt class="py-op">.</tt><tt class="py-name">add_argument</tt><tt class="py-op">(</tt><tt class="py-string">'--host'</tt><tt class="py-op">,</tt> <tt class="py-string">'-H'</tt><tt class="py-op">,</tt> <tt class="py-name">help</tt><tt class="py-op">=</tt><tt class="py-string">"Host"</tt><tt class="py-op">)</tt> </tt>
<a name="L55"></a><tt class="py-lineno">55</tt>  <tt class="py-line">    <tt id="link-7" class="py-name"><a title="pypln.apps.parser" class="py-name" href="#" onclick="return doclink('link-7', 'parser', 'link-3');">parser</a></tt><tt class="py-op">.</tt><tt class="py-name">add_argument</tt><tt class="py-op">(</tt><tt class="py-string">'--port'</tt><tt class="py-op">,</tt> <tt class="py-string">'-p'</tt><tt class="py-op">,</tt> <tt class="py-name">help</tt><tt class="py-op">=</tt><tt class="py-string">"Host"</tt><tt class="py-op">)</tt> </tt>
<a name="L56"></a><tt class="py-lineno">56</tt>  <tt class="py-line">    <tt id="link-8" class="py-name"><a title="pypln.apps.parser" class="py-name" href="#" onclick="return doclink('link-8', 'parser', 'link-3');">parser</a></tt><tt class="py-op">.</tt><tt class="py-name">add_argument</tt><tt class="py-op">(</tt><tt class="py-string">'--field'</tt><tt class="py-op">,</tt> <tt class="py-string">'-f'</tt><tt class="py-op">,</tt> <tt class="py-name">help</tt><tt class="py-op">=</tt><tt class="py-string">"Host"</tt><tt class="py-op">)</tt> </tt>
<a name="L57"></a><tt class="py-lineno">57</tt>  <tt class="py-line">    <tt class="py-name">args</tt> <tt class="py-op">=</tt> <tt id="link-9" class="py-name"><a title="pypln.apps.parser" class="py-name" href="#" onclick="return doclink('link-9', 'parser', 'link-3');">parser</a></tt><tt class="py-op">.</tt><tt class="py-name">parse_args</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L58"></a><tt class="py-lineno">58</tt>  <tt class="py-line">     </tt>
<a name="L59"></a><tt class="py-lineno">59</tt>  <tt class="py-line">    <tt class="py-comment">#frequency(db='Results',collection='Documentos')</tt> </tt>
<a name="L60"></a><tt class="py-lineno">60</tt>  <tt class="py-line">    <tt id="link-10" class="py-name" targets="Function pypln.apps.frequency_counter.frequency()=pypln.apps.frequency_counter-module.html#frequency"><a title="pypln.apps.frequency_counter.frequency" class="py-name" href="#" onclick="return doclink('link-10', 'frequency', 'link-10');">frequency</a></tt><tt class="py-op">(</tt><tt class="py-name">db</tt><tt class="py-op">=</tt><tt class="py-name">args</tt><tt class="py-op">.</tt><tt class="py-name">db</tt><tt class="py-op">,</tt><tt class="py-name">host</tt><tt class="py-op">=</tt><tt class="py-name">args</tt><tt class="py-op">.</tt><tt class="py-name">host</tt><tt class="py-op">,</tt><tt class="py-name">port</tt><tt class="py-op">=</tt><tt class="py-name">args</tt><tt class="py-op">.</tt><tt class="py-name">port</tt><tt class="py-op">,</tt><tt id="link-11" class="py-name"><a title="pypln.pypln.stores.mongostore.collection" class="py-name" href="#" onclick="return doclink('link-11', 'collection', 'link-2');">collection</a></tt><tt class="py-op">=</tt><tt class="py-name">args</tt><tt class="py-op">.</tt><tt class="py-name">col</tt><tt class="py-op">,</tt><tt class="py-name">fields</tt><tt class="py-op">=</tt><tt class="py-name">args</tt><tt class="py-op">.</tt><tt class="py-name">field</tt><tt class="py-op">)</tt> </tt>
<a name="L61"></a><tt class="py-lineno">61</tt>  <tt class="py-line"> </tt><script type="text/javascript">
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